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Finding the Fourth Proportional to 610,910.10, 916,802.55 and 256,178.70

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Solution

The fourth proportional to 610,910.10, 916,802.55 and 256,178.70 is: 384,451.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,910.10 : 916,802.55 = 256,178.70 : x
  2. Step 2: Convert to fraction form
    610,910.10/916,802.55 = 256,178.70/x
  3. Step 3: Cross multiply
    610,910.10x = 916,802.55 × 256,178.70
  4. Step 4: Simplify right side
    610,910.10x = 234,865,285,415.69
  5. Step 5: Solve for x
    x = 234,865,285,415.69/610,910.10
  6. Step 6: Final answer
    x = 384,451.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.